The use of different CT reconstruction algorithms will allow the quantitative assessment of small bowel Crohn's Disease (CD) while exposing patients to lower radiation doses. MBIR and ASIR will provide images with lower noise and similarly accurate quantification of CD. Additionally, MBIR will allow acquisition of CT data at very low radiation doses, with comparable image quality and quantitative assessment of CD compared to higher radiation dose acquisitions performed utilizing FBP and ASIR. MBIR will not be inferior to FBP or ASIR in assessing findings related to Crohn's Disease on CT enterography (CTE).